Faerûn: Lord of the Eternal Sun

[D&D, Fantasy Adventure, Son of the Sun] In a human city-state in the desert, Isaac, illuminated by the sun's disc, grows a magical golden eye on his forehead. In this class-based feudal city-state, Isaac rises from the lowest commoner to become a paladin, ultimately becoming the Lord of the Eternal Sun. Shahram, your emperor has returned! ... Elements involved: Desert oasis, theocracy, paladins, nobility, the Santalite Order, Wraith City, Netheril, Waterdeep, Neverwinter, Baldur's Gate, the magic network